1603610667481 has 2 divisors, whose sum is σ = 1603610667482. Its totient is φ = 1603610667480.

The previous prime is 1603610667431. The next prime is 1603610667517. The reversal of 1603610667481 is 1847660163061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1374345905625 + 229264761856 = 1172325^2 + 478816^2 .

It is a cyclic number.

It is not a de Polignac number, because 1603610667481 - 2¹⁵ = 1603610634713 is a prime.

It is a super-2 number, since 2×1603610667481² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1603610667401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 801805333740 + 801805333741.

It is an arithmetic number, because the mean of its divisors is an integer number (801805333741).

Almost surely, 2^{1603610667481} is an apocalyptic number.

It is an amenable number.

1603610667481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1603610667481 is an equidigital number, since it uses as much as digits as its factorization.

1603610667481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 1603610667481 in words is "one trillion, six hundred three billion, six hundred ten million, six hundred sixty-seven thousand, four hundred eighty-one".